For homes and small businesses that rely on natural gas as a backup fuel, tri-fuel generators offer flexibility when gasoline runs low or propane isn’t available. This guide highlights top tri-fuel models capable of running on gas, propane, or natural gas, with emphasis on natural gas compatibility and reliable starting features. Each overview notes key specs, runtime, and safety features to help you choose a dependable power solution for emergencies or out-of-grid use.
| Product | Peak Watts | Running Watts (Gas) | Fuel Types |
|---|---|---|---|
| Westinghouse 12500 Peak Watt Tri-Fuel | 12500 | 9500 | Gas, Propane, Natural Gas |
| Westinghouse 14500 Peak Watt Tri-Fuel | 14500 | 11500 | Gas, Propane, Natural Gas |
| DuroStar DS13000MXT Tri-Fuel | 13000 | 9800–? (varies by fuel) | Gas, Propane, Natural Gas |
| Generac 12500 Starting Watt Tri-Fuel | 12500 | 9500 | Gas, Propane, Natural Gas |
| Westinghouse 13500 Peak Watt Tri-Fuel | 13500 | 10500 | Gas, Propane, Natural Gas |
Note: Specs reflect typical configurations listed by manufacturers and may vary slightly by model or testing conditions. For accurate run-time under your load, consult the user manual or use an online calculator from the manufacturer.
Westinghouse 12500 Peak Watt Tri-Fuel
Key features include a 457cc Westinghouse 4-Stroke OHV engine with a long-lasting cast iron sleeve, remote start with a key fob, and safe shutdown features like automatic low oil and CO monitoring. It provides 12500 peak watts on gasoline, 11200 peak watts on propane, and 9500 peak watts on natural gas, with a 6.6-gallon fuel tank and up to 12 hours of runtime. The unit is transfer switch ready and includes GFCI outlets with safety covers.
Westinghouse 14500 Peak Watt Tri-Fuel
Designed for larger homes or remote job sites, this model delivers 14,500 peak watts on gasoline and 13,500 peak watts on propane, with natural gas delivering around 12,000 peak watts. It runs on a heavy-duty 550cc Westinghouse engine and can operate up to 19 hours on a 9.5-gallon tank. It also features a digital hour meter, a gas gauge, and multiple outlets including transfer switch readiness for home backup power.
DuroStar DS13000MXT Tri-Fuel
The DS13000MXT provides 13,000 watts total with all three fuels and includes a remote electric start plus a full power panel with a transfer switch-ready 50-amp outlet. The unit emphasizes CO safety features and a robust 500cc engine, making it suitable for whole-home backup and RV use. It also offers a simple fuel selector and a variety of outlets to support diverse load needs.
Generac 12,500 Starting Watt Tri-Fuel
Generac’s unit combines a 500cc Generac OHV engine with tri-fuel flexibility and COsense carbon monoxide detection. It runs at up to 9.5 hours on gasoline with robust fuel economy and a push-button electric start. The design supports easy integration with a home transfer switch and provides 12500 starting watts with 9500 running watts on gasoline, plus adaptable outputs for utility-grade backup power.
Westinghouse 13500 Peak Watt Tri-Fuel
This model delivers 13,500 peak watts on gasoline and up to 10,000–12,000 watts on propane and natural gas, depending on configuration. It features a 500cc Westinghouse engine, a 9.5-gallon fuel tank with gauge, and multiple outlets with safety rubber covers. The remote start and CO shutdown components enhance reliability for long-duration outages and RV-ready applications.
Westinghouse 11000 Peak Watt Tri-Fuel
The iGen11000TFc combines inverter technology with tri-fuel flexibility, offering quieter operation and efficient fuel usage. It supports a 50A outlet for home transfer setups and features GFCI protection, a battery for electric start, and a CO sensor. This unit is designed for sensitive electronics and versatile power delivery for weekend cabins or home backups.
Buying Guide: Key Considerations For Tri-Fuel Generators
- Fuel flexibility and availability: Tri-fuel models support gasoline, propane, and natural gas, which is ideal during fuel shortages or price spikes. Consider how easy it is to connect natural gas lines or propane tanks and whether you need a hose kit included.
- Power output and runtime: Match peak and running watts to your expected load. Evaluate runtime on different fuels and tank size to estimate how long you can power essential circuits during an outage.
- Starting method: Electric start provides convenience, especially in cold weather, but backup recoil start is valuable if the battery fails. Check for remote start features if you want to start from inside the house.
- Outlets and transfer readiness: Look for transfer switch-ready configurations and a full set of outlets, including 50A receptacles for whole-home backup. GFCI protection adds safety for outdoor use.
- Safety features: Automatic low-oil shutoff, CO sensors, and fuel gauge help prevent damage and improve safety during operation.
- Engine quality and durability: Engines with cast-iron sleeves and robust OHV design tend to last longer under heavy use. Consider noise level and warranty terms for long-term ownership.
- Portability vs. stationary use: Some units are portable with wheels and handles, while larger models are meant to stay on-site with a dedicated power setup. Assess weight and maneuverability against your space.
- Maintenance and service: Availability of replacement parts, local service centers, and ease of fuel system maintenance are important for reliability during emergencies.
- Environmental considerations: Inverter-based models often run with variable speed to boost efficiency and reduce noise, which is beneficial for residential areas and long-running outages.